USP Pesticide Roundtable: Collaboration Model

Transcription

1 USP Pesticide Roundtable: Collaboration Model Josef A. Brinckmann USP Dietary Supplements Stakeholder Forum Wednesday, June 7, 2017

2 MAIN POINTS Multi-stakeholder consultations regarding U.S. pesticide limits as a model collaboration effort: March 2016: USP Stimuli Article main points May 2016: Public comment deadline - responses Dec 2016 USP Roundtable with government & industry Stakeholder engagement informs DSHM-EC on industry needs and challenges 2017: Post-roundtable developments Potential solutions and the way forward 2

3 March 2016: USP Stimuli Article for Public Comment 3

4 March 2016: USP Stimuli Article main points Articles from an estimated 3,000 botanical species are in commerce yet the majority of species have no EPA-established tolerances. The majority of species are also wild-collected (not farmed) and therefore unlikely to ever have pesticide tolerance levels established. Residues of legacy (e.g. DDT) and current use pesticides (CUPs) now detected in Arctic ice caps (evidence of long range atmospheric transport). In rural areas, there is widespread contamination of wildflowers and beecollected pollen with agricultural pesticides. Nonpoint source pesticide detection is an increasing problem even with certified organically grown and/or wild-collected botanicals. In the absence of EPA-tolerances, residues of allowed pesticides intentionally applied to conventional herb crops in other countries are unlawful pesticides as per FDA regulations (regulated as zero tolerance). 4

5 USP Stimuli Article main points cont. EPA does not specify limits for botanical extracts which are ingested at lower levels than dried botanical raw materials. Recent technological advancements in pesticide analysis have substantially improved the sensitivity of detection, identification, and quantitation of pesticide residues. USP limits are applicable to botanical drugs (OTC and Rx) but not to botanical dietary supplements, even when same botanical can be a drug or supplement (unless the dietary supplement label claims compliance with USP standards). USDA National Organic Program (NOP) permits not more than 5% of the EPAtolerance for the specific residue detected or unavoidable residual environmental contamination. Because most botanical articles have no EPAestablished tolerances, five percent of a zero value is still zero!! 5

6 May 2016: Public comment - responses USP received positive responses to the Stimuli Article from different types of stakeholders including: Accredited laboratories for analysis of botanical substances & products American and European processors and suppliers of botanical raw materials Manufacturers of botanical extracts Multinational manufacturers of botanical drug and botanical dietary supplement products Comments strongly supported the proposal that USP limits for pesticide residues should be accepted broadly for all articles of botanical origin in the United States. Additionally, it was suggested that there should be a general MRL established for pesticides not listed in the pharmacopeia. Furthermore, commenters urged harmonization of pesticide residue limits for articles of botanical origin among governments and pharmacopeias. 6

7 December 2016 USP Roundtable with government and industry 7

8 Main outcomes: USP Pesticide Roundtable Nonpoint source pesticide contamination of organic botanical crops as well as wild-collected botanicals illustrates that a zero-tolerance approach is not rational, and that science-based standards could provide a framework to establish toxicologically sound limits. A survey should be carried out to determine the magnitude of concern from nonpoint source pesticides observations and published in order to increase awareness amongst the regulators. Science-based approach: The current paradigm of crop-specific limits which have not been set by the EPA for most herbs of commerce should be corrected through science-based approaches such as the pharmacopeial standards of the USP and PhEur. Toxicological basis: Participants contrasted the toxicological basis for controlling exposure to contaminants such as lead and residual solvents (irrespective of the exposure source) with the crop-specific basis for controlling pesticide residue exposure.. 8

9 Main outcomes: USP Pesticide Roundtable Legal Recognition of USP Standards: Participants suggested that EPA or FDA incorporate USP NF by reference into regulations as an acceptable compendium for determining pesticide residue contaminants on all articles of botanical origin.. It s not so easy! Understanding the challenges of regulatory amendments, inclusion in FDA guidance of USP pesticide residue limits as action levels in the absence of a specific MRL was also discussed. Contaminant or additive? An FDA attendee suggested that pesticide residues detected on a botanical that is certified organically grown or wild collected could be considered to be a contaminant rather than an additive. EPA tolerances are applicable to specific crops where the pesticide chemical has been intentionally applied. Regulators could view nonpoint source pesticide contamination of wild crops differently than detection of cropspecific pesticide residues within EPA-established tolerances. 9

10 Main outcomes: USP Pesticide Roundtable Import refusals: Case studies of FDA enforcement actions that have been taken based on zero tolerance illustrated the impact to the industry and international commerce. Analytical challenges: Establishing limits involves consideration of analytical method challenges related to complex botanical matrices, and harmonization across pharmacopeias to facilitate international commerce. How about a general MRL? Participants suggested adoption of a general MRL for limiting pesticide residues for which EPA or USP limits are not set, similar to the Canadian general MRL of 0.1 ppm. Trace levels requiring no action? FDA Compliance Program Guidance Manual (CPG): Pesticides and Chemical Contaminants in Domestic and Imported Foods-CP It is worth examining whether Lab Class "2 results (residue with no established tolerance or guideline detected but at a trace level requiring no follow-up) provide regulatory relief. Trace level is defined as a residue above the LoD but below the LoQ, which is still specific to the analytical method!! 10

11 Stakeholder engagement informs DSHM-EC on industry needs and challenges Comments received from the stimuli article and comments made at the roundtable have informed the work program of the DSHM-EC. As a result: USP Scientific Staff and EC Members have prioritized attending and presenting on the topic at relevant conferences. USP commited to hold meetings with EPA, FDA, USDA, NOSB and others to advocate for USP standards as a part of the solution. USP may potentially revise the pesticide list, limits and methods section in the USP General Chapter <561> Articles of Botanical Origin. USP aims to collect information on nonpoint source contamination from botanical companies, trade associations, and through proposed collaborations with other pharmacopeias. The EC will develop a manuscript that quantifies the problem of nonpoint source pesticide contamination, with an argument for legal recognition of USP standards, targeted for 2018 publication in the Food and Drug Law Journal 11

12 Post-roundtable developments One outcome of the roundtable was in the form of invitations to participate in professional conferences: The Toxicology Forum, Washington, DC (Feb, 2017) International Conference on the Science of Botanicals, Oxford, MS (April, 2017) MRL Workshop, San Francisco, CA (May, 2017) 12

13 Media coverage of presentation at ICSB

14 Collaboration towards potential solutions USP DSHM-EC viewpoint: Achieving legal recognition by FDA in 21 CFR of the USP 561 limits, applied broadly to all herbs of commerce, would solve (most of) the problem in terms of quality assurance, safety and the ability of industry to procure botanical raw materials without risk of import refusals (due to absence of EPA tolerances). However, USDA NOP 7 CFR ( Exclusion from organic sale ) would also need to reference USP limits in order to solve most of the problems. Amending USP General Chapter 561 limits to add a gmrl for pesticides not listed in Table 4 that also lack EPA tolerances and/or FAO-WHO limits would also help as well as collaboration with other pharmacopeias to harmonize pesticide residue limits. 14

15 Collaboration towards potential solutions EPA current thinking: At the 2017 MRL Workshop, Rick Keigwin, Acting Director, OPP, EPA, elaborated 4 international involvement goals: 1. Strengthen Protections food safety, facilitate trade, environmental protection; 2. Enhance Regulatory Decisions through Collaboration improve science base and enhance regulatory efficiency; 3. Conserve Resources the availability of resources for governmental agencies is dwindling; 4. Minimize Barriers make sure that setting of MRLs are set in a way that does not result on trade barriers. 15

16 Collaboration towards potential solutions EPA current thinking: At the 2017 MRL Workshop Mr. Keigwin also suggested new areas of potential flexibility to explore, in particular: In a pilot project, EPA may consider incorporating international Codex limits in cases where no EPA-established tolerances exist. Q.: In that case, could EPA also consider incorporating the official USP limits? EPA could consider viewing inadvertent residues as contaminants, rather than as residues of intentionally applied pesticides. Q. In that case, would nonpoint source pesticide contamination (inadvertent residues) detected on wild collected or organic herbs still be subject to FDA enforcement of the EPA tolerances that are established for intentional application on specific food crops? 16

17 Collaboration towards potential solutions Trade association viewpoints: AHPA (American Herbal Products Association): In May 2017, AHPA submitted comments in response to EPA s Request for Comments on Evaluation of Existing Regulations recommending that EPA should continue to expand Crop Group 19 [referring to the IR-4 (Interregional Research Project No. 4)]; should create exceptions for unavoidable, inadvertent pesticide residues; should create general tolerances for pesticides intentionally applied in foreign countries; should use Codex Alimentarius Commission MRLs and scientific evaluations. ASTA (American Spice Trade Association): At the 2017 MRL Workshop, John Hallagan, General Council, ASTA, stated that ASTA has worked to add MRLs for spices through the Codex process. ASTA is also discussing the use of Codex MRLs with EPA in cases where no EPA-established tolerance exists. ASTA also supports expanding the IR-4 Project crop grouping approach. 17

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